Python Wire Rope - Wesco Industries Ltd.

01/2004
PYTHON ®
HIGH PERFORMANCE WIRE ROPE
04
Selection | Removal Criteria | Constructions | Specifications

PYTHON
HIGH PERFORMANCE WIRE ROPE
> FOR:
• Overhead Cranes, metric and imperial
• Crawler-, Mobile-, Tower Cranes
• Steel Mill Cranes
• Container- Port and Heavy Lift Cranes
• Aluminum- and Paper Mill Cranes
• Special High Strength
11 / 2003
PYTHON ®
HIGH PERFORMANCE WIRE ROPE
03
• Superior Rotation Resistance
Selection | Removal Criteria | Constructions | Specifications
• Made in Germany by WDI
• www.pythonrope.com
©Unirope Limited, 2004 Version 01/2004
Concept: Unirope Limited Layout: Unirope Limited
Design Consultant: baustein strategic design group www.baustein.ca
Graphics: Unirope Limited, Wire Rope Users Manual, Fotosearch, FotosToGo.
No responsibility is assumed or implied for any printing error.
We reserve the right to change at any time any technical specification,
recommendations, or any other data contained in this catalogue.
Python® and Compac® are registered trademarks of
Unirope Limited, Mississsauga, Canada.
Python® USA #: 2,394,943 Canada: TMA 515,411
Compac® USA #: 2,490,884 Canada: TMA 567,920

Wire rope is a very complex machinery element which primary function is the
transmission of tensile forces. Its basic constructional design allows repeated
changes in the direction of pull through reeving systems incorporating drums
and sheaves.
General purpose rope constructions are standardized in national (ASTM,
CSA) and international standards (ISO).
However, the increasing demand for higher breaking strength, greater
flexibility, better rotation resistance, and extended rope life cannot be met by
such general purpose rope constructions.
The discrepancy between expectation and operating ‘reality’ has led to the
development of PYTHON® High Performance rope constructions which,
amongst other features, offer significantly improved operating life. This has
been achieved through adaptation of engineered rope geometry and purpose
designed manufacturing processes.
WDI, located in Germany, has taken a leading role in the development of High
Performance PYTHON® Wire Rope as further described in this catalogue.
INDEX
Application Guideline ........................................................2
Quick Reference Guide ....................................................3
Basic Information on Wire Rope........................................4
Wire Rope is a Machine ....................................................5
Wire Rope WILL FAIL if worn-out,
overloaded, misused, damaged, improperly
maintained or abused. Wire rope failure
may cause serious injury or death!
Protect yourself and others:
■ ALWAYS INSPECT wire rope for WEAR,
DAMAGE or ABUSE BEFORE USE.
■ NEVER USE wire rope that is WORN-
OUT, DAMAGED or ABUSED.
■ NEVER OVERLOAD a wire rope
■ INFORM YOURSELF: Read and
understand our literature
■ REFER TO APPLICABLE CODES,
STANDARDS, and REGULATIONS for
INSPECTION REQUIREMENTS and
REMOVAL CRITERIA.
■ For additional information, ask your
employer or your Python® Distributor
Wire Rope Removal Criteria ..............................................6
Fundamentals of Inspection and Handling ....................7-8
Wire Rope Strength ..........................................................9
Compaction and Die-Drawing..........................................10
Bending Fatigue Resistance ............................................11
Rotation Resistant and Non-Rotating Wire Rope ............12
Sheaves and Drums ........................................................13
Python ® Super 8..........................................................14-15
Python ® Multi ..............................................................16-17
Python ® HS 9 ..............................................................18-19
Python ® Ultra ..............................................................20-21
Python ® Construct 6 ..................................................22-23
Python ® UNI-4 ............................................................24-25
Python ® Compac 18 ..................................................26-27
Python ® Compac 35 ....................................................28-29
Python ® Lift ................................................. ..............30-31
Python ® Hoist.................................................... ..........32-33
-1-

Application Guideline
Overhead Cranes
Due to the vast variety of overhead cranes in service there is no
'standard' rope construction which would fit all types. In most
cases, cranes made in North America require imperial size ropes
either, Class 6x19 or 6x36 are the traditional choices.
To enhance the crane performance the use of Python ® High
Performance rope is recommended. Python® wire rope can
replace traditional 6-strand construction without any changes to
the crane, other than making sure the sheaves and drum are in
good condition.
If you upgrade from a standard strength 6-strand or 6-strand diedrawn
type select Python® Super 8R, in either left- or right hand
lay. This type matches the breaking strength requirement but will
greatly outperform any traditional rope. It requires corresponding
drum grooving and thus ensures the most stable rope block you
can imagine.
If you experienced some block twisting you want to select
Python® MULTI. Even slight block twisting is a constant
inconvenience when you have to position a C-clamp into stacked
coils, for example.
Another application is where both rope ends are attached to the
drum. The result is that 1/2 of the rope always spools into a
incorrect drum grooving direction. Particularly 8-strand ropes
without a plastic coated core (as provided by most OEM’s) tend
to torque resulting in loose strands and waviness. Using
Python® MULTI reduces and, in most cases, eliminates such
problems. Because of it’s very unique construction Python-MULTI
does NOT require corresponding drum grooving and still has
shown the highest degree of service life increase of all Python
types.
Some North American made overhead cranes have been
converted, or can be converted, to higher lifting capacities using
high strength Python® SUPER 8V, Python® HS-9V or Python®
Ultra compacted constructions. We suggest not to attempt to
convert your crane without professional advice, nor to select such
without consultation with your local Python Distributor.
Overhead Cranes and Rotation Resistant Ropes
As a rule, Non-Rotating or Rotation Resistant rope types shall
only be used if the lower sheave block tends to spin and Python®
Multi did not cure the problem. Generally, non-rotating ropes will
have a LOWER fatigue life than standard constructions, although
they seem to have 'finer' wires and appear to be more flexible.
Specifically 9x17 spin resistant, 19x7, 19x19, and 24x7 rotation
resistant ropes tend to break up from the inside and require
frequent and careful inspections. Most of these rope types on
overhead cranes are smaller sizes between 5/16" and 7/16"
(between 5 mm and 11 mm).
For larger diameter non-rotating ropes (> 1/2” or 13 mm) we
recommend Python® Lift or Python®-Hoist with a plastic
coated core to prevent premature internal wire breaks.
Under no circumstances do we recommend Python® Compac
18 for such applications.
Scrap and Grab Cranes, Piledrivers
These are, in essence, "wire rope destruction machines". Some
users had good results with 6x19 COMPAC® ropes, others prefer
the simplicity of standard 6x19 ropes. For shock loading
applications some users have had very god results with Python®
Super 8V yet there were reports also of good performance with
plastic (impregnated-delete) filled rope types (BXL), PFV or
Cushion ropes are some trade names). In essence, we believe
that the human factor, crane design, crane location, and scope of
work creates such a mix of conflicting requirements that we, as
the rope supplier, can only suggest that whatever works best for
YOU in YOUR specific situation is also the best rope for you. This
may not be the case for the chap next door.
Hoisting Rope for Mobile Cranes
Most of the smaller capacity US made cranes like Grove, Terex,
P&H, Century, National, operate best with Python® Compac 18.
It’s compacted outer rope surface is superior on multiple layer
drums where traditional ropes tend to fail due to friction damages
at the winding crossover points. However, Python® Compac 18,
when used to it’s full fatigue life, tends to break up from the inside
out (as all 19x7/19x19 rope do). Therefore, in high cycle
applications and for some high load ratings (e.g. on Manitowoc's)
Python®-LIFT ropes are either already installed by the crane
manufacturer, or are the recommended upgrade choice. As an
alternate rope selection we recommend Python® Compac 35 as
this rope combines high strength, low rotation and die-drawn
strands at a very attractive price.
Under NO circumstances do we recommend the so called '8x19
spin resistant' rope construction. In service this type of rope WILL
to break up from the inside out and when used with one end free
to rotate looses up to 40% of its breaking strength. Catastrophic
and unexpected rope failures are the result.
Hoist Rope on Tower Cranes
For tower cranes we do not recommend the use of 19x7 or 19x19
style rope types; this includes out Python® Compac18 . Rotation
Resistant ropes (having less than 14 outer strands) are very
difficult to inspect since they tend to fatigue from the inside of the
rope. Also, nearly all European tower cranes require high strength
non-rotating ropes and neither 19x7 nor 19x19 types fulfill the
demand on strength and/or on non-rotating properties.
For the older Pecco "double sheave lower suitcase block", which
is used strictly in a 2-line configuration, a regular 6x36 IWRC rope
is sufficient, provided the building height is no more than 10-12
floors. Here, large line spacing prevents the block from spinning.
For all other cranes we recommend Python® Compac 35. For
extremely high strength requirements Python® Lift ropes are the
choice.
Linden, some Kroll- and Comedil tower cranes which have the 3-
or 4 sheave arrangement in the block are 'rope killers'. The
reverse bend in such systems is so severe that short rope life
MUST be expected. Under NO circumstances should you use
19x7/19x19 ropes. Even if you use our Python® non-rotating
ropes we will NOT guarantee no bird-cages and other rope
deformations as a result of such reeving systems. There have
been reported sudden and unexpected rope failures. Such set
ups are quick and easy to convert from a 2 part to a 4-part line
but it’s not ideal from a wire rope standpoint ... and there is
nothing we can do about it; you simply have to learn to live with it
and INSPECT ... INSPECT ... INSPECT !
-2-

Quick Reference
Python ® Super 8
Python ® Multi
Python ® HS 9
Python ® Ultra
Python ® Construct-6
Python ® UNI-4
Python ® Compac 18
Python ® Compac 35
Python ® Hoist
Python ® Lift
8-strand overhead crane wire rope with a plastic
coated core to increase operating life, and to provide
for permanent core lubrication. Type Super 8 V is a
compacted rope for increased strength. Available in
left- and right hand lay. For all overhead cranes,
looping- and accumulator tower applications.
Developed for maximum performance on
overhead cranes. This rope features a plastic
coated core for extended fatigue life performance
and permanent core lubrication. Python® Multi is
spin resistant to reduce block twisting on
overhead cranes. Recommended for looping- or
accumulator tower applications.
All steel high strength type for overhead cranes.
This rope is compacted to enhance abrasion
characteristic and to reduce sheave- and drum
wear. Up to 40% strength increase over standard
6-strand constructions.
Ultra high strength type mainly used as high
fatigue resistant rope for engineered cable
assemblies. Up to 55% strength increase over
standard 6-strand constructions. Sensitive to
introduced rotation so call before you select this
rope for overhead crane applications.
High strength standard 6-strand rope for
applications which require a crush resistant rope
to be used on multiple layer winding systems.It
has also shown remarkable performance gains
as main hoist rope on port container cranes and
on some overhead crane applications.
Very robust 4-strand wire rope which is
compacted resulting in flat outer strands for
increased abrasion resistance. This rope is spinresistant
and is used as hoisting rope for bulk ship
cranes as well as on heavy duty construction
equipment like pile drivers.
Due to a larger number of individual wires it is
more flexible than 19x7. The entire rope is
compacted to provide for better drum spooling
and less core abrasion. Recommended for Grove,
Terex-, Century- Link-Belt-, and National cranes.
NOT to be used with a swivel.
Recommended to be used on tower- and
european type mobile cranes. Available in leftand
right hand lay as well as in regular- and lang's
lay constructions. Recommended to be used in
single line applications. ALLOWED to be used
with a swivel.
Fatigue resistant non-rotating rope. Compacting
increases strength and sheave contact area. The
plastic coated core increases fatigue life and
prevents premature inner wire breaks as well as
providing for permanent core lubrication.
ALLOWED to be used with a swivel.
High strength super flexible true non-rotating
rope. Oval outer strands provide for excellent
sheave and drum contact area. Lift has very
successfully been used in multiple drum layer
applications. Needs special attention during
installation. ALLOWED to be used with a swivel.
-3-

®
Basic Information
Some Information every user should know about use and care of wire rope.
What follows is a brief outline of the basic information required to safely use wire rope.
1. Wire rope WILL FAIL IF WORN OUT, OVERLOADED,
MISUSED, DAMAGED, or IMPROPERLY MAINTAINED.
2. In service, wire rope loses strength and work capability.
Abuse and misuse increase the rate of loss.
3. The MINIMUM BREAKING STRENGTH of wire rope
applies ONLY to a NEW, UNUSED rope.
4. The Minimum Breaking Strength should be considered the
straight line pull with both rope ends fixed to prevent
rotation, which will ACTUALLY BREAK a new, UNUSED,
rope. The Minimum Breaking Strength of a rope should
NEVER BE USED AS ITS WORKING LOAD.
5. To determine the working load of a wire rope, the
MINIMUM or NOMINAL Breaking Strength MUST BE
REDUCED by a DESIGN FACTOR (formerly called a
Safety Factor). The Design Factor will vary depending
upon the type of machine and installation, and the work
performed. YOU must determine the applicable Design
Factor for your use.
For example, a Design Factor of “5" means that the
Minimum- or Nominal Breaking Strength of the wire rope
must be DIVIDED BY FIVE to determine the maximum
load that can be applied to the rope system.
Design Factors have been established by OSHA, by ANSI,
by ASME and similar government and industrial
organizations.
No wire rope should ever be installed or used without full
knowledge and consideration of the Design Factor for the
application.
6. WIRE ROPE WEARS OUT. The strength of a wire rope
slightly increases after the break-in period, but will
decrease over time. When approaching the finite fatigue
life span, the breaking strength will sharply decrease.
Never evaluate the remaining fatigue life of a wire rope by
testing a portion of a rope to destruction only. An in depth
rope inspection must be part of such evaluations.
7. NEVER overload a wire rope. This means NEVER use the
rope where the load applied is greater than the working
load determined by dividing the Minimum Breaking
Strength of the rope by the appropriate Design Factor.
8. NEVER ‘SHOCK LOAD’ a wire rope. A sudden application
of force or load can cause both visible external damage
(e.g. birdcaging) and internal damage. There is no
practical way to estimate the force applied by shock
loading a rope. The sudden release of a load can also
damage a wire rope.
9. Lubricant is applied to the wires and strands of a wire rope
when manufactured. This lubricant is depleted when the
rope is in service and should be replaced periodically.
10. Regular, periodic INSPECTIONS of the wire rope, and
keeping of PERMANENT RECORDS SIGNED BY A
QUALIFIED PERSON, are required by OSHA and other
regulatory bodies for almost every rope installation. The
purpose of inspection is to determine whether or not a wire
rope may continue to be safely used on that application.
Inspection criteria, including number and location of
broken wires, wear and elongation, have been established
by OSHA, ANSI, ASME and other organizations.
IF IN DOUBT, REPLACE THE ROPE.
Some inspection criteria on rope, sheaves and drums are
outlined further in this brochure.
11. When a wire rope has been removed from service
because it is no longer suitable, IT MUST NOT BE RE-
USED ON ANOTHER APPLICATION.
12. Every wire rope user should be aware of the fact that each
type of fitting attached to a wire rope has a specific
efficiency rating which can reduce the working load of a
rope assembly or rope system, and this must be given due
consideration in determining the capacity of a wire rope
system.
13. Some conditions that can lead to problems in a wire rope
system include:
● Sheaves that are too small, worn or corrugated can
cause damage to a wire rope.
● Broken wires mean a loss of strength.
● Kinks permanently damage a wire rope.
● Environmental factors such as corrosive conditions
and heat can damage a wire rope.
● Lack of lubrication can significantly shorten the useful
service life of a wire rope.
● Contact with electrical wire and the resulting arcing will
damage a wire rope.
The above is based on the ‘Wire Rope Safety Bulletin’ published by the “WIRE ROPE TECHNICAL BOARD”.
-4-

Basic Information
®
Wire Rope is a Machine
A wire rope is a machine, by dictionary definition:"An
assemblage of parts...that transmit forces, motion, and energy
one to another in some predetermined manner and to some
desired end.”
A typical wire rope may contain hundreds of individual
wires which are formed and fabricated to operate at close
bearing tolerances one to another. When a wire rope bends,
each of its many wires slides and adjusts in the bend to
accommodate the difference in length between the inside and
the outside bend. The sharper the bend, the greater the
movement.
Every wire rope has three basic components:
(1) The wires which form the strands and collectively provide
rope strength;
(2) The strands, which are helically around the core; and,
(3) The core, which forms a foundation for the strands.
The core of wire rope is an Independent Wire Rope Core
(IWRC), which is actually a rope in itself. The IWRC in Python
rope provides between 10% and 50% (in non-rotating
constructions) of the wire rope’s strength.
The greatest difference in wire ropes are found in the
number of strands, the construction of strands, the size of the
core, and the lay direction of the strand versus the core.
The wires of wire rope are made of high-carbon steel.
These carbon steel wires come in various grades. The term
“Grade” is used to designate the strength of the wire rope. Wire
ropes are usually made of Extra Improved Plow Steel (EIPS) or
Extra Extra Improved Plow Steel (EEIPS)
One cannot determine the Grade of a wire rope by its feel
or appearance. To properly evaluate a rope grade you must
obtain the Grade from your employer or rope supplier.
Right Regular Lay
RRL
Left Regular Lay
LRL
Right Lang Lay
RLL
Left Lang Lay
LLL
-5-

®
Fundamentals of Wire Rope Inspection
When to replace wire rope based on number of broken wires
Table A)
Number of broken wires in
Running Ropes
Number of broken wires in
Standing Ropes
Standard
Equipment
In one
Rope Lay
In one
Strand
In one
Strand
At End
Connection
ASME/B30.2
Overhead & Gantry Cranes
12**
4
Not specified
ASME/B30.4
Portal, Tower & Pillar Cranes
6**
3
3
2
ASME/B30.5
Crawler, Locomotive & Truck Cranes,
Rotation Resistant Rope
Retirement criteria based on number of broken wires found in a
length of wire rope equal to
6 times rope diameter- 2 broken wires maximum, and
30 times rope diameter- 4 broken wires maximum
Running Rope
6**
3
3
2
ASME/B30.6
Derricks
6**
3
3
2
ASME/B30.7
Base Mounted Drum Hoists
6**
3
3
2
ASME/B30.8
Floating Cranes & Derricks
6**
3
3
2
ASME/B30.16
Overhead Hoists
12**
4
Not specified
ANSI/A10.4
Personnel Hoists
6**
3
2**
2
ANSI/A10.5
Material Hoists
6**
Not specified
Not specified
** Also remove for 1 valley break (see next page for further information)
Rope Removal and possible Cause
Fault Possible Cause Fault Possible Cause
Accelerated Wear
Rapid Appearance
of Broken Wires
Corrosion
Kinks
Excessive localized
Wear
Severe abrasion from being dragged
over the ground or obstructions.
Rope not suitable for application.
Poorly aligned sheaves.
Large fleet angle.
Worn sheave with improper groove,
size or shape.
Sheaves and rollers have rough wear
surface.
Stiff or seized sheave bearings.
High bearing and contact pressures.
Sheaves/drum too small.
Rope not suitable for application.
Reverse bends.
Sheaves/drums too small.
Overload and shock loads.
Excessive rope vibration.
Kinks that have formed and have
been straightened out.
Crushing and flattening of the rope.
Sheave wobble.
Inadequate lubrication.
Improper storage.
Exposure to acids or alkalis.
Improper installation.
Improper handling.
Slack rope pulled tight.
Drum crushing.
Equalizer Sheave.
Vibration.
Stretch
Broken Wires near
Fitting
Sheaves/Drums
Wear out
Pinching, Crushing,
oval Shape
Rope Unlays
(Opens up)
Reduction in
Diameter
Bird Cage
Core Protrusion
Overload.
Passed normal stretch and
approaches failure.
Rope Vibration.
Fittings get pulled too close to
sheave or drum.
Material too soft
Sheaves grooves too small.
Not following proper installation and
maintenance procedure on multiple
layer drums
Wrong rope construction.
Rope end attached to swivel.
Broken core.
Overload.
Internal wear.
Corrosion.
Tight Sheaves.
Rope is forced to rotate around its
own axis.
Shock loads.
Improper Wedge Socket installation.
Shock loading.
Disturbed rope lay.
Rope unlays.
Load spins and rotates rope around
its own axis.
-6-

Fundamentals of Wire Rope Inspection and Handling
®
Wire Rope Inspection
An inspection should include verification
that none of these removal criteria are met
by checking for such things as:
- Surface wear, normal and unusual
- Broken wires: Number and location
- Reduction in diameter
- Rope stretch (elongation)
- Integrity of attachments
- Evidence of abuse or contact with other
objects
- Heat damage
- Corrosion
See Table A on the previous page for
maximum allowable wire breaks causing
discard of the rope.
Under normal operating conditions individual wires will break due to material
FATIGUE. Such breaks are usually located at the CROWN of a strand. ALL
wire rope removal criteria are based on CROWN wire breaks.
Remove the rope from service even if you find a SINGLE individual wire break
which originates from inside of the rope. These so called VALLEY breaks have
shown to be the cause for unexpected complete rope failures.
Inspection of Sheaves
Sheave
groove
matches rope
Sheave
groove too
small
Sheave
groove worn
out
New rope will
be damaged
Check for worn and
corrugated sheaves
Handling of Wire Rope
Right Right Wrong Wrong
For a complete discussion on Handling, Installation, Inspection, and
Maintenance of Wire Rope, please ask for our separate Catalogue
-7-

Fundamentals of Wire Rope Inspection and Handling
Measuring Wire Rope
Design specification for wire rope are such
that the diameter is slightly larger than the
nominal size as shown in the catalogue.
The allowable tolerances are:
≤ 1/8" -0 / +8%
> 1/8" ≤ 3/16" -0 / +7%
> 3/16"≤ 5/16" -0 / +6%
> 5/16" -0 / +5%
Python® wire rope is produced with an
allowable oversize tolerance of only 4%, all
others have an allowable 5% oversize
tolerance.
When put into service the wire rope
diameter slightly decreases when first
loaded. A further reduction in wire rope
diameter indicates wear, abrasion, or core
deterioration.
Right
Wrong
Allowable Rope Oversize Tolerance
Nominal
Diameter
inch
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
5% Diameter Tolerance
Maximum
Diameter
inch
.395
.46
.525
.590
.65
.79
.92
1.05
1.18
1.31
1.44
1.58
1.71
1.84
1.97
2.10
Nominal
Diameter
mm
10
11
12
14
15
16
18
20
22
24
26
28
30
32
34
36
Maximum
Diameter
mm
10.5
11.5
12.6
14.7
15.7
16.8
18.9
21
23.1
25.2
27.3
29.4
31.5
33.6
35.7
37.8
Wire Rope Lay Direction
Be sure to use the correct rope lay direction
for the drum. This applies to smooth, as
well as to grooved drums.
In some applications it may be advisable to
select the rope lay direction according to
the most frequently used drums layers. If
Overwind from left to right:
Use Right Hand Rope
Underwind from right to left:
Use Right Hand Rope
Left Hand Grooved:
Use Right Hand Rope
the first rope layer is used as a ‘guide layer’
only, it is advisable to select the rope lay
direction according to the second layer.
If you are in doubt about this issue, give us
Overwind from right to left:
Use Left Hand Rope
Underwind from left to right:
Use Left Hand Rope
Right Hand Grooved:
Use Left Hand Rope
a call and we will be happy to assist you.
-8-

Wire Rope Construction
Strength
The breaking strength of wire rope can be increased in two ways: either by increasing the wire material TENSILE STRENGTH or
by increasing the rope’s FILL FACTOR.
TENSILE STRENGTH
The wires of wire rope are made of high-carbon steel.
These carbon steel wires come in various grades. Wire
ropes are usually made of Extra Improved Plow Steel
(EIPS) or Extra Extra Improved Plow Steel (EEIPS) which
roughly equivalents to a wire tensile strength of
1960N/mm 2 and 2160N/mm 2.
As one can see from the tables in this catalogue the
difference in the rope’s breaking strengths by increasing
the material tensile strength is only about 10%.
FILL FACTOR
In order to further increase the breaking strength of wire
rope one has to increase the rope’s fill factor.
The fill factor measures the metallic cross section of a rope
and compares this with the circumscribed area given by
the rope diameter. Traditional rope constructions ‘fill’ the
rope diameter only up to about 58% with steel. Python®
wire rope ‘fill’ the rope diameter up to 80% with steel. That
is an metallic increase of about 38% which results in a
similar increase in rope strength.
100 %
Two methods can be employed: Selecting a different rope
CONSTRUCTION or COMPACTING/DIE DRAWING the
rope/strands.
75 %
50 %
25 %
Solid Steel Bar
Python ® ULTRA
Python ® HS 9V
Python ® Super 8V
Compac ® 625/636
Python ® MULTI
Regular 6x36 IWRC
Regular 6x36 FC
0 %
100 %
Fill Factor of different rope constructions
75 %
50 %
25 %
Solid Steel Bar
Python ® LIFT
Python ® HOIST
Python ® Compac 35
Python ® Compac 18
34 x 7
19 x 7
0 %
-9-

Wire Rope Construction
Compaction and die-drawing
Many of our wire ropes are made with either die-drawn strands (Python ® Compac 35) or the entire rope is subjected to a compaction
process ( all other Python ® types). Here are the differences:
DIE-DRAWN STRANDS
This process is applied to the strands NOT to the rope. The
ready made strands are forced through drawing dies which
compress and shape the individual wires to have a flat
outer surface. The advantages are
: increased strength
: less wire interlocking on multiple layer drums
: less contact pressures onto sheaves and drums
ROPE SWAGING
This process is usually applied to wire rope which is made
using the double parallel manufacturing method, or where
the rope core is plastic coated. This process is applied
after the rope has been manufactured and compresses
individual surface wires as well as closing strand gaps.
The advantages are
: increased strength
: transforming the entire rope into a more ‘round’ shape
: less wire interlocking on multiple drums
: less contact pressure onto sheave and drums
: embedding strands into plastic coated cores
: achieve tighter diameter tolerances
: reduces constructional rope stretch to near zero
Standard strand wires Die-drawn strand wires Compacted strand wires
-10-

Wire Rope Construction
Bending Fatigue Resistance
The ability of a wire rope to withstand repeated bending
work over sheaves and onto drums is also called ‘fatigue
resistance’. This term describes the ultimate rope life
based on the maximum mechanical fatigue resistance of
the wire material used. This term does NOT describe the
ability to withstand mechanical damages nor the crush
resistance of a wire rope.
The fatigue resistance of a wire rope is not time- but cycle
dependent. Bending fatigue is the ability to withstand
repeated bending over sheaves and drums. The ability to
withstand a certain number of bending cycles is linked to
equipment related factors, such as
: diameter, shape, and groove dimensions of sheaves
and drums
: the load the rope is subjected to
: the fluctuation of highest to light loads
: the line speed
: rapid acceleration and braking forces
: the rope construction
The larger the bending radii become, the higher is the
expected fatigue life. Large drums and sheaves will
reduce radial rope pressures. Reverse bends in the
reeving system, especially within short distances, will have
a major negative impact on rope life.
Rope Service Life
6x19 Filler
8x19 Filler
9x19 Filler
Research Institute for Material
Handling, Institute of
Technology, Stuttgart, Germany
Rope diameter: 16 mm (5/8”)
Tensile Strength: 1570 N/mm 2
Construction: Filler, IWRC
D/d Ratio: 25:1
Breaking Strength: 135.7 kN
Many years of monitoring rope performance in the field
together with scientific research at Universities and
Technical Institutes have led to the recognition that the
number of outer strands in a rope is a very significant
factor influencing rope service life.
The number of outer strands determines the contact area
between the rope and sheave groove. If this area is
increased the points of contact are multiplied and abrasive
wear of rope and sheave is reduced. At the same time
lateral notching stresses between strands and wires are
reduced, resulting in increased fatigue life.
Extensive test programs at the University of Stuttgart,
Germany, have proven conclusively that bending fatigue of
wire rope improves with an increasing number of outer
strands.
Based on this research we have developed high
performance wire rope with 8-, 9-, and 10 outer strands.
DF 5:1
-11-

Wire Rope Construction
Rotation Resistant and
Non-Rotating Wire Rope
When loaded, every wire rope will develop
torque; that is it has the tendency to
: unlay itself unless both rope ends are
secured against rotation.
: cause a lower sheave block to rotate and
to spin the line parts together.
Rotation resistant ropes can be divided into
3 categories:
Spin-Resistant, 2 layer
(8 to 10 outer strands)
Rotation Resistant, 2 layer
(11 to 13 outer strands)
Non-Rotating, 3 layer
(14 or more outer strands)
The characteristic of these wire ropes are
that the outer layer is twisted in the
opposite direction of their inner layers. The
sometimes confusing issue is that many 8-
9- and 10 strand constructions are 2-layer
types but their inner strands are NOT
twisted in the opposite direction and
therefore these rope are NOT spinresistant;
plus, for the untrained eye these
ropes look very much alike their spin-
Example of a 2-layer
rotation resistant
construction with 12
outer strands.
(19x7)
resistant variants. With one rope end
allowed to spin freely these and regular 6-
strand ropes will spin violently and unlay
themselves when loaded. They may also
develop a significant drop in breaking
strength and an even larger drop in their
fatigue life characteristic.
As already mentioned, to achieve any
degree of resisting the tendency of a rope
to spin and unlay under load all such rope
types (other than 4-strand ones) are
constructed with 2 or more layers of
opposite twisted strands.
2-layer ropes have a larger tendency to
rotate than 3-layer ones (e.g. class 34x7).
Furthermore, 2-layer spin-resistant and
rotation resistant ropes will develop only
about 55% to 75% of their breaking
strength when one end is allowed to rotate
freely. This number increases to between
95% to 100% for 3-layer non-rotating
ropes.
Another important issue is that 2-layer
rotation resistant and 2-layer spin-resistant
rope types have the tendency to break up
from the inside. The 8 (e.g. 8x25 spinresistant)
or 12 outer strands (19x7, 19x19)
are not able to evenly distribute the
tension- and torque forces between inner
and outer strands. Furthermore, the
inherent internal strand cross overs (which
make the rope spin- or rotation resistant)
resulting in severe notching stresses cause
the rope core to break up premature
(unless the core is plastic coated, e.g.
Python® Multi). Unexpected and sudden
rope failures may be the result. Moreover,
2-layer spin-resistant or rotation resistant
ropes satisfy only low to moderate
rotational resistance demands.
3-layer rope constructions (e.g. class
35x7) have many more outer strands which
can much better distribute the radial
pressures onto the reverse lay inner
strands. These ropes should be selected
for larger mobile- and ALL tower cranes.
-12-

Wire Rope Construction
Sheaves and Drums
The performance of all wire rope depends on the good
condition and sufficient dimensions of sheaves and drums.
Too small sheaves and drums will reduce the service life
of a rope. This is more a question of ‘performance’ rather
than ‘safety’. The following table is based upon
recommendations by the Wire Rope Technical Board:
Suggested
Construction D/d ratio
19x7 / 18x7 34
6x26 WS 30
6x25 Filler, 6x31 WS, Compac ® 626 26
6x36 WS, Python ® HS9, Python ® Ultra 23
8x25, Python ® Super 8, Python ® Multi 20
Python ® Compac 35, Python ® Lift and Hoist 20
Recommended Sheave and Drum Contours:
Groove radii minimum: o.53 to .535x d for new rope
Groove radii maximum: o.55 to o.56x d
Sheave Groove depth: 1.5 x d
Drum Pitch for SINGLE layer minimum: 2.065 x groove radii
Drum Pitch for SINGLE layer maximum: 2.18 x groove radii
Drum groove depth: minimum ≥ o.375x d for helical grooved
Hardness: As wire rope has a hardness of about 50-55RC we
recommend that the hardness of sheaves and drums is at least
35 RC, better is 40-45 RC
Sheave opening angle should be 35˚ to 45˚ for applications
with fleet angles ≤ 1.5˚, for larger fleet angles use 60˚
opening.
Maximum rope fleet angle for general purpose ropes
should not exceed 4˚, for non-rotating/rotation resistant
types and for Python ® HS-9 and Python ® Ultra the fleet
angle should not exceed 1.5˚
Sheaves and Drums
Multi-layer drum systems should use diedrawn
(Python ® Compac 35) or type ‘V’
Python ® rope constructions having a steel
core. The higher fill factor of such rope
constructions ensure a greater resistance
to crushing and flattening than
conventional rope types. This is particularly
important for boom hoist ropes on lattice
boom cranes at the cross over point from
one rope winding to the next.
Cranes equipped with multi-layer drum
systems which require rotation-resistant or
non-rotating rope are best served with
Python ® Compac 35 or Python ® Lift rope
constructions as these have a smooth
outer surface allowing the rope to better
‘glide’ from one winding into the next.
To further reduce drum crushing have the
first rope layer wound onto the drum with
about 5-10% of the WLL and avoid that this
first layer unspools and re-spools without
tension. This would cause a ‘soft’ bottom
layer which will flatten rather quickly.
Python ® ropes also help reduce strand
interlocking which normally occurs at
adjacent rope wraps. This is caused by too
large of fleet angles as well as is the cause
of multiple layer windings on smooth
(ungrooved) drums.
All Python ® ropes have a smooth and very
round outer rope surface which helps to
minimize abrasive wear due to strand-tostrand
contacts.
For further information please refer to
our Catalogue ‘Handling Procedures’.
-13-

Wire Rope
Python ® Super 8
for Overhead Cranes
Shown is Super 8 V (compacted)
8-strand fatigue resistant construction
compacted design to increase strength (Type V)
flat outer wires for optimum sheave contact (Type V)
plastic coated core helps prevent inner wire breaks
permanent lubricated core
Main Applications:
Super-8 is the classic 'upgrade' rope for all overhead crane types to
increase the rope's fatigue life. The 8-strand construction provides
an excellent combination of flexibility, fatigue life, and abrasion
resistance.
Also used in looping- or accumulator tower applications.
Available in right regular lay (RRL) AND left regular
lay (LRL)
Rope Characteristic:
8-strand high performance overhead crane wire rope with a plastic
coated core. This special engineered hard plastic prevents metal to
metal contact between outer- and inner strands and greatly
reduces internal, non-detectable, wear and abrasion resulting in
increased fatigue life, plus it provides for permanent core
lubrication.
Type 'V' is compacted for increased surface contact area between
rope and sheave thus reducing sheave and drum wear.
Super 8 is up to 30% stronger than regular 6-strand EIPS ropes.
Check listings for details.
Python ® Super 8 is NOT rotation resistant or non-rotating
Standard:
DIN 2078/3051 where applicable
-14-
Do NOT use Python®
Super 8 wire rope attached
to a swivel. The rope WILL
unlay resulting in an
unsafe condition.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights.
Call for advice

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Python ® Super 8
Overhead Crane Wire Rope
Construction:
8 x 25 Filler
8-strand overhead crane wire rope with a plastic
coated core to prevent inner undetectable fatigue
breaks. The plastic coating also increases fatigue
life and ensures permanent core lubrication. Type
Super V is a compacted rope for better abrasion
resistance and increased strength.
Python® Super-8 is available in right- and in left
lay configurations to adopt to the corresponding
drum groove direction.
Furthermore, using right- and left hand rope on
the same crane results in a rope system which is
very stable against block twisting.
Rope
dia.
inch
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
Imperial Python ® Super 8
Minimum Strength tons of 2000 lbs
Super 8 R Super 8 V Super 8 V
EIPS
10.3
13.7
17.4
21.7
30.6
41.1
54.8
69.4
86.9
103.4
122.6
144.8
EIPS
15.1
19.1
23.9
33.7
45.2
60.3
76.4
95.7
113.8
134.9
159.4
EEIPS
16.6
21.1
26.4
37.2
49.9
66.5
84.2
105.5
125.5
148.7
175.7
Weight
per foot
lbs*
.29
.47
.59
.74
1.05
1.40
1.87
2.37
2.97
3.53
4.19
4.95
6-strand
8-strand
1-3/4
164.4
180.9
199.4
5.61
Metric Python ® Super 8
The 8-strand construction provides an increase in
contact points between rope and sheave. Less
wear of the rope and of your equipment.
Rope
dia.
mm
Minimum Strength in kn
Super 8 R Super 8 V Super 8 V
1960 N/mm 2 1960 N/mm 2 2160 N/mm 2
Weight
per mtr
kgs*
10
11
12
75.6
91.4
108.8
119.8
132.0
.43
.52
.62
13
14
15
127.7
148.1
170.0
140.6
163.0
187.1
154.9
179.6
206.2
.73
.84
.97
16
17
18
193.4
218.4
244.8
212.9
240.4
269.5
234.6
264.9
297.0
1.10
1.25
1.40
19
20
22
272.8
302.2
365.7
300.2
332.7
402.5
330.9
366.6
443.6
1.56
1.72
2.09
24
26
28
435.2
510.8
592.4
479.0
562.2
652.0
527.9
619.6
718.6
2.48
2.91
3.38
30
32
34
680.1
773.8
873.5
748.5
851.6
961.4
824.9
938.5
1059.5
3.88
4.41
4.98
*Weights for Super 8V: Add approximately 10%
36
38
979.3
1091.1
-15-
1077.9
1200.9
1187.8
1323.5
5.59
6.22

Wire Rope
Python ® Multi
Hoisting Applications
10-strand fatigue resistant construction
compacted design for a smooth outer surface
flat outer wires for optimum sheave contact
plastic coating SHIELDS reverse lay core preventing direct
contact between outer- and inner strands thus preventing
premature inner rope failures
Reverse lay core minimizes block twisting
6-strand
The 10-strand construction
provides an increase in
contact points between rope
and sheave. Less wear of
the rope and of your
equipment.
10-strand
Main Applications:
10-strand high performance wire rope for overhead cranes as well
as some truck- and container cranes.
Special spin-resistant feature prevents much of the unwanted block
twisting on overhead cranes.
Rope Characteristic:
The core is plastic coated to prevent metal to metal contact
between inner- and outer strands and greatly reduces internal,
undetectable, wear and abrasion. Also, the core is twisted in the
opposite direction of the outer strands making this rope spinresistant
and therefore ideal for cranes where both rope ends are
attached to the drum.
Multi is a compacted rope to reduce initial rope stretch and to
increase the outer strand contact area to sheaves and drum. 10
outer strands distribute the load pressures more equally thus
reducing wear of the rope and your equipment.
Compared to 6-strand ropes Multi has increased service life in
many cases up to 5 times and more.
Python® Multi is SPIN RESISTANT but NOT rotation
resistant or non-rotating. Used where these demands
are low or moderate. Proper and sufficient line spacing
is required.
Standard:
DIN 2078/3051 where applicable
Do NOT use Python® Multi
wire rope attached to a
swivel. The rope WILL
unlay resulting in an
unsafe condition.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights.
Call for advice
-16-

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
10-Strand Hoisting Wire Rope
Construction:
10 x 19
Developed for maximum performance on
overhead cranes. This rope features a plastic
coated core for extended fatigue life
performance and permanent core lubrication.
Python ® MULTI is spin resistant to reduce block
twisting on overhead cranes. Also
recommended for looping- or accumulator tower
applications.
Rope
dia.
inch
1/2
9/16
5/8
3/4
7/8
1
Imperial Python ® MULTI
Minimum Strength tons of 2000 lbs
MULTI MULTI*
EIPS
13.7
17.4
21.8
30.7
41.1
54.8
EEIPS
15.1
19.2
24.0
33.8
45.4
60.5
Weight
per foot
lbs
.48
.61
.77
1.08
1.45
1.93
Fatigue Life Comparison
Example:
Rope dia. ......................... 5/8”
Sheave dia ...................... 15-3/4”
Sheave opening .............. 60 degree
Rope tension at DF 5:1 for a
6-strand rope
8x25 Filler
10 strand Multi
1-1/8
1-1/4
1-3/8
1-1/2
1-3/4
69.4
87.0
103.7
122.7
164.6
76.5
96.0
114.3
135.3
181.4
2.44
3.06
3.65
4.32
5.79
6x25 Filler
Python® MULTI ropes in EEIPS or 2160 N/mm 2 are
NOT available from stock
Rope
dia.
mm
Metric Python ® MULTI
Minimum Strength in kn
MULTI MULTI*
1960 N/mm 2 2160 N/mm 2
Weight
per mtr
kgs*
13
14
15
127.9
148.3
170.2
140.9
163.4
187.6
.75
.87
1.00
16
18
20
193.7
245.1
302.6
213.4
270.1
333.5
1.14
1.44
1.78
22
24
26
366.2
435.8
511.4
403.5
480.2
563.9
2.15
2.56
3.01
28
30
32
593.1
680.9
774.7
653.7
750.4
853.8
3.49
4.01
4.56
34
36
38
874.6
980.5
1092.5
963.8
1080.5
1204.0
5.14
5.77
6.43
40
42
44
1210.5
1334.5
1464.5
1334.0
1470.5
1614.0
7.12
7.85
8.62
-17-

Wire Rope
Python ® HS-9
High Strength Hoisting
Up to 7/8”
9-strand fatigue resistant high strength construction
compacted design to increase strength
flat outer wires for optimum sheave contact (type V)
inner strands are laid parallel to the outer strands to avoid
any strand cross-overs and premature wire nicking
1” and up
6-strand
The 9-strand construction
provides an increase in
contact points between rope
and sheave. Less wear of
the rope and of your
equipment.
9-strand
Main Applications:
Super high strength yet super flexible overhead crane wire rope.
Used as original equipment rope and for crane capacity upgrades.
Also used as high strength engineered assembly cable for tension
applications. Type V has little to no initial constructional stretch.
Sizes 11mm and 14 mm in left lay are original equipment ropes for
some DEMAG crane types.
Rope Characteristic:
HS-9 V is compacted to enhance the abrasion characteristic and to
reduce sheave- and drum wear. Type HS-9V in combination with
EEIPS (2160 N/mm 2 ) wire tensile grades increases rope strength of
up to about 50% over regular strength 6-strand types.
HS-9 is constructed from a total of up to 358 single wires compared
to 265 single wires in traditional 6x36 wire rope. This results in a
super strong yet super flexible rope.
Although HS-9 is our most successful high strength rope
construction there are precautions we must address before you
select this rope. One is that the direction of lay which must
correspond to drum grooving, the other is that large fleet angles
may cause high strands or core protrusion because the rope will
‘roll’ rather than ‘glide’ into the sheave groove. Any introduction of
torque into (any) wire rope will cause structural damages.
Python® HS-9 is NOT rotation resistant
or non-rotating
Standard:
DIN 2078/3051 where applicable
-18-
Do NOT use Python® HS-9
wire rope attached to a
swivel. The rope WILL
unlay resulting in an
unsafe condition.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights.
Call for advice

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
9-Strand High Strength Crane
Wire Rope
Construction:
9 x 19 Seale (up to7/8”)
9 x 25 Filler (1” and up)
Rope
dia.
inch
Imperial Python ® HS-9
Minimum Strength tons of 2000 lbs
HS-9 R
EIPS
HS-9 V
EIPS
HS-9 V
EEIPS
Weight
per foot
lbs*
High strength rope type. Type ‘V’ is extra
compacted.
Core is parallel laid to minimize strand nicking.
Up to 40% strength increase over standard 6-
strand constructions. Requires corresponding
drum groove direction.
OEM rope on some DEMAG cranes. Ask us for
details
HS-9 V
EEIPS
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
12.1
16.1
20.4
25.6
36.1
49.2
65.6
83.2
104.2
--
17.5
22.2
27.8
39.2
52.6
70.1
88.8
111.2
--
19.3
24.5
30.6
43.2
57.9
77.2
97.9
122.5
.40
.53
.67
.84
1.19
1.58
2.10
2.66
3.33
Strength Comparison
Compac 6
EIPS
HS-9 R
EIPS
HS-9 V
EIPS
1-3/8
1-1/2
1-5/8
1-3/4
123.9
146.9
173.6
197.0
132.3
156.8
185.2
210.2
145.7
172.8
204.1
231.6
3.96
4.70
5.55
6.30
6x36
EIPS
Metric Python ® HS-9
Rope
dia.
mm
Minimum Strength in kn
HS-9 R HS-9 V HS-9 V
1960 N/mm 2 1960 N/mm 2 2160 N/mm 2
Weight
per mtr
kgs*
10
11
12
89.0
107.7
128.1
139.1
--
--
153.3
.49
.59
.71
13
14
15
150.4
174.4
200.2
163.3
189.4
217.4
180.0
208.7
239.6
.83
.96
1.10
16
17
18
227.8
257.2
288.3
247.4
279.3
313.1
272.6
307.8
345.0
1.26
1.42
1.59
19
20
22
321.2
355.9
438.3
348.8
386.5
467.7
384.4
426.0
515.4
1.77
1.96
2.34
Python® HS-9 is available
in right- and left hand lay.
Ask for availability from stock.
24
26
28
521.6
612.1
709.9
556.6
653.2
757.6
613.4
719.9
834.9
2.79
3.27
3.79
30
32
34
815.0
927.3
1047.0
869.7
989.5
1117.0
958.4
1090.4
1231.0
4.36
4.96
5.60
(1)
Weights for PYTHON- HS 9 V: add approx. 10%
EEIPS and 2160 N/mm 2 are non-stock items
36
38
1173.5
1307.5
1252.3
1395.3
1380.1
1537.7
6.27
6.99
-19-

Wire Rope
Python ® Ultra
for engineered applications
Up to 3/4”
Python® Ultra is
available in rightand
left hand lay.
Ask for availability
from stock.
10-strand fatigue resistant ULTRA high strength rope
compacted design to increase strength
MaxFlat compression for optimum sheave contact
parallel inner-to-outer strand design increases fatigue life
Main Applications:
Super high strength wire rope mainly used for engineered cable
assemblies, counterweight ropes, winch lines, boom pendants,
extension- and retraction cables, etc. Overhead crane applications
for sizes above 3/4" (19 mm) may require some restrictions as to
fleet angle and lay direction. Call before you select this rope.
7/8” and up
Python® Ultra when fabricated into a Uni-Loc ® Cable Assembly
Rope Characteristic:
Python®-Ultra is our highest strength rope available. It is fully
compacted resulting in an extreme smooth outer rope surface and
the removal of nearly all of the constructional stretch. This is an
important feature if you require a low stretch rope for cables
assemblies. Ultra is an 'all parallel' construction type, meaning that
there are no wire cross-overs within the rope body to ensure
maximum fatigue life. Ultra provides a strength increase of up to
53% over regular 6-strand constructions. Refer to the
conservatively calculated strength tables.
Python®-Ultra requires corresponding drum grooving directions;
e.g. use a right hand lay rope if the drum is left hand grooved.
Large fleet angles may cause high strands or core protrusion
because the rope will ‘roll’ rather than ‘glide’ into the sheave
groove. Any introduction of torque into (any) wire rope will cause
structural damages.
Python® Ultra is NOT rotation resistant or non-rotating
Standard:
DIN 2078/3051 where applicable
-20-
Do NOT use Python® Ultra
wire rope attached to a
swivel. The rope WILL
unlay resulting in an
unsafe condition.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights.
Call for advice

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
10-Strand Ultra High Strength
Wire Rope
Construction:
10 x 19 Seale (up to 3/4”)
10 x 25 Filler (7/8” and up)
Rope
dia.
inch
Imperial Python ® - Ultra
Minimum Strength tons of 2000 lbs
ULTRA
ULTRA
EIPS
EEIPS
Weight
per foot
lbs
Ultra high strength type mainly used as high
fatigue resistant rope for engineered cable
assemblies. Up to 55% strength increase over
standard 6-strand constructions. Sensitive to
introduced rotation so call before you select this
type of rope for overhead crane applications.
Rope Characteristic:
: Ultra High Strength
: All steel, parallel construction
: Flexible 10 outer strand type
: Fully compacted
: Smooth rope surface
: High fatigue resistant
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
18.0
22.8
28.5
40.2
53.9
71.9
91.1
114.1
135.7
160.9
190.0
215.7
252.4
19.8
25.1
31.4
44.3
59.4
79.2
100.5
125.8
149.6
177.3
209.5
237.8
278.3
.59
.74
.93
1.31
1.73
2.31
2.93
3.66
4.36
5.17
6.10
6.93
8.11
Rope
dia.
mm
Metric Python ® - Ultra
Minimum Strength in kn
ULTRA
ULTRA
1960 N/mm 2 2160 N/mm 2
Weight
per mtr
kgs
Typical application of Python®
Ultra as Retraction- and
Extension cables inside
mobile crane booms.
12
13
14
15
16
17
142.8
167.6
194.4
223.1
253.9
286.6
157.4
184.7
214.2
245.9
279.8
315.9
.78
.91
1.06
1.22
1.38
1.56
18
19
20
321.3
358.0
396.7
354.1
394.6
437.2
1.75
1.95
2.16
22
24
26
480.0
571.3
670.4
529.0
629.5
738.8
2.57
3.06
3.60
28
30
32
777.5
892.6
1015.6
856.9
983.7
1119.2
4.17
4.79
5.45
34
36
38
40
1146.5
1285.3
1432.1
1586.8
1263.5
1416.5
1578.2
1748.7
6.15
6.89
7.68
8.51
42
44
46
48
1749.5
1920.0
2098.6
2285.0
1928.0
2116.0
2312.7
2518.2
9.38
10.30
11.26
12.26
-21-

Wire Rope
Python ® Construct-6 Boom Hoist- and Overhead Crane Rope
6-strand crush resistant high strength rope
compacted design to increase strength
MaxFlat compression for optimum sheave contact
Up to 7/8 - 24 mm
6 F-V
1” - 26 mm and up
6 WS-V
Python® Construct-6
types are available in
right- and left hand lay.
Ask for availability from
stock.
Boom Hoist
Main Applications:
High strength standard 6-strand rope for applications which require
a crush resistant rope to be used on multiple layer winding
systems; e.g. boom hoist on lattice boom mobile- and tower
cranes. This rope has also shown remarkable performance
gains as main hoist rope on port container cranes and on
some overhead crane applications.
Rope Characteristic:
Python® Construct-6 is a swaged rope which is constructed from
specialty made engineered and sized 6-strand wire rope. The basic
wire rope is already manufactured with purpose intend to be
compacted (or swaged) into the finished product. The degree of
compacting is carefully selected to ensure the best compromise
between crush- and fatigue resistance. The strength increase
compared to standard 6-strand ropes varies between about plus
10% to 35% depending on rope diameter.
Python® Construct-6 is available as a 25 wire (6 F-V) or 36 wire
(6WS-V) construction, in left- and right lay, bright or galvanized.
Choose 6 F-V as Boom Hoist rope, 6 WS-V for single layer drum
hoisting.
Because of the compacting process most of the rope’s initial stretch
(constructional stretch) has already been removed.
Python® Construct-6 is NOT rotation resistant or nonrotating
Standard:
DIN 2078/3051 where applicable.
Do NOT use Python®
Construct-6 wire rope
attached to a swivel. The
rope WILL unlay resulting
in an unsafe condition.
-22-
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights.
Call for advice

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
6-strand compacted wire rope
Construction:
6 F-V (up to 7/8” or 24 mm)
6 WS-V (1” / 26 mm and up)
6-strand rope with flat outer wire surface resisting
drum crushing and aiding in better multiple layer
spooling. Compacting removes most of
constructional stretch.
Rope
dia.
inch
5/16
7/16
1/2
Imperial Python ®
Nominal Strength
in tons of 2000 lbs
EIPS
7.5
13.1
17.6
Construct-6
Weight
per foot
lbs
.25
.44
.59
9/16
5/8
3/4
7/8
1-1/8
1-1/4
20.1
25.8
35.2
45.9
70.9
94.8
.68
.87
1.18
1.55
2.37
3.15
Rope
dia.
mm
Metric Python ® Construct-6
Minimum Strength
1960 N/mm 2
kN tons of 2000 lbs
Weight
per mtr
kgs
Boom Hoist Rope Applications
8
9
10
67.1
82.2
98.3
7.5
9.2
11.0
.37
.46
.55
11
12
13
116.2
135.6
156.3
13.1
15.2
17.6
.65
.76
.87
14
15
16
178.5
202.5
229.9
20.1
22.8
25.8
1.01
1.13
1.29
Boom and Main Hoist Ropes
18
19
20
283.1
313.0
342.9
31.8
25.2
38.5
1.59
1.75
1.91
22
24
26
408.6
481.2
561.0
45.9
54.1
63.1
2.30
2.70
3.16
28
30
32
631.2
737.4
843.4
70.9
82.9
94.8
3.52
4.10
4.68
34
36
952.6
1061.8
107.1
119.3
5.34
6.03
Overhead Crane Applications
-23-

Wire Rope
Python ® UNI-4
4-strand crush- and rotation resistant
UNI-4
4 outer rope strands with fiber core
40 wire parallel strand construction
Complete rope is compacted resulting in oval shaped outer strands
increased surface area for better contact and durability
Main Applications:
Python ® UNI-4 was developed for ship cranes using bulk grabs to
unload coal, iron ore, and other abrasive bulk loads. Moreover, it
has shown it’s superior feature of crush resistance when used with
many other tough loads like logs which tends to easily crush normal
wire rope.
Because of it’s crush resistance it is also used on pile drivers and
other heavy duty construction equipment which requires a crush
resistant rope for multiple layer windings, even on smooth drums.
Rope Characteristic:
The geometry of ropes which have 4 outer strands results in a
somewhat rotation resistant characteristic. The main reason being
is that the physical lever arm length from the center of each strand
to the center of the rope becomes shorter the less outer strands a
rope has; such shorter lever arms results is less torque. Other
reasons why this rope is rotation resistant is the ‘regular lay’
construction coupled with a longer than normal rope lay length. On
the other hand such a construction is relatively stiff; not only
because of the 4-strands but also because of the longer lay length.
We do combat that in that we insert a fiber core into each of the 4
strands and that each strand has 40 wires. This is somewhat of
compromise between good crush resistance, attained rope
strength, and acceptable flexibility.
It’s rotation resistant characteristic is not all that great but is
sufficient for most ship crane applications.
Strength loss when used with a load bearing swivel is acceptable
but we strongly recommend to use this rope with a positioning
swivel only (not having roller- or ball bearings).
-24-
Do NOT use Python®
UNI-4 wire rope attached
to a swivel or have one or
both rope ends rotate
freely under load. Doing
so will result in a loss of
rope strength and
reduced fatigue life.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights. This is NOT a
non-rotating rope.
Call for advice

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Steel Wire Rope,
Rotation Resistant, Compacted
Construction:
4x40 rotation resistant, fiber core, RRL
4-strand wire rope for all applications which call
for a tough but at the same time rotation
resistant rope type. Mainly used on bulk
shipunloader cranes with grabs and on heavy
duty construction equipment, like pile drivers.
The compaction process results in nearly oval
outer strands which gives the rope a smooth
outer surface for increased abrasion resistance
to be able to withstand the rough bulk unloading
procedures and multiple layer drum crushing.
Rope
dia.
mm
18
19
20
22
24
25
Rope
dia.
inch
3/4
7/8
1
Python ® UNI-4
4 x 40 rotation resistant
Nominal Strength
tons of
kN 2000 lbs
288
320
355
429
482
529
32.3
35.9
39.9
48.2
54.2
59.4
Weight
per foot
kg/m lbs/ft
1.44
1.61
1.79
2.08
2.53
2.65
.96
1.08
1.20
1.39
1.70
1.78
Specify if galvanized finish is required.
26
28
30
1-1/8
580
680
781
65.2
76.4
87.8
2.77
3.39
3.90
1.86
2.27
2.61
32
34
36
1-1/4
879
993
1135
98.8
111.6
127.6
4.20
4.75
5.60
2.81
3.20
3.75
-25-

Wire Rope
Python ® Compac 18 Rotation Resistant Wire Rope
2-layer type, refer
to page 10
Compac 18 (18x19)
12 outer rope strands
19 wire SEALE strand construction for better flexibility
Complete rope is compacted for increased abrasion resistance and better spooling
Inner strands are reversed lay to provide rotation resistance feature
Main Applications:
Python ® Compac 18 is recommended for both multipart load and
single part applications where a medium rotational stability is
needed. Use as main- and auxiliary hoist line on GROVE, LINK
BELT, MANITOWOC, TEREX and other US made mobile- and truck
cranes. Often used as a single point line. Large lifting heights will
require a tag line to prevent spinning of the load.
Also used very successfully as a pulling rope on underground cable
pulling winches.
NOT recommended for construction tower cranes.
Rope Characteristic:
Using the rope to it’s maximum fatigue life will cause the rope to
deteriorate from the inside out. For this reason we do not
recommend this rope to be used on construction for tower cranes.
However, mobile and truck mounted cranes are operated on a
much less severe duty cycle and it is not expected that Python ®
Compac18 has to be replaced because of inner rope fatigue but
because of other mechanical damages. Keep in mind that this
statement covers normal mobile crane use only.
Compacted strands provide improved abrasion resistance as
compared with round wire types because of the greater wire and
strand bearing surfaces contacting sheaves and drums.
Python ® Compac 18 wire ropes are more resistant to the effects of
drum crushing than 19x7 due to the compacted strands and
smoothness of the rope surface.
With 18 strands of 19 wires in all sizes, Python ® Compac 18
remains extremely flexible and easy to handle.
Python ® Compac 18 ropes are ROTATION
RESISTANT but NOT non-rotating.
Do NOT use Python®
Compac 18 wire rope
attached to a swivel or
have one or both rope
ends rotate freely under
load. Doing so will result
in a loss of rope strength
of between 30% to 40%.
Block Twisting (Cabling)
will occur when used
exceeding certain lifting
heights. This is NOT a
non-rotating rope.
Call for advice
-26-

Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Steel Wire Rope,
Rotation Resistant, Compacted
Construction:
18 x 19 IWRC, compacted, bright, RRL
Python ® Compac 18 is recommended where a
medium rotational stability is needed. Use as
main- and auxiliary hoist line on GROVE, LINK
BELT, MANITOWOC, TEREX and other US
made smaller mobile- and truck cranes. Often
used as a single point line. Larger lifting
heights will require a tag line to prevent
spinning of the load and/or block twisting.
NOT recommended for construction
tower cranes.
Rope
dia.
inch
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
Python ® Compac 18
(18 x 19 rotation resistant)
Nominal Strength
tons of 2000 lbs
EIPS
7.6
10.4
14.5
18.4
22.7
32.7
44.5
58.1
73.5
Weight
per foot
lbs
.30
.40
.54
.69
.85
1.25
1.68
2.17
2.74
-27-

Non-Rotating Wire Rope
Python ® Compac 35 Non-Rotating Wire Rope
3-layer type, refer
to page 10
Compac® 35 (35x7)
16 outer rope strands (19x7 has 12 only)
Compacted rope design
Outer wires are die drawn to provide a smooth rope surface thus enhancing
spooling characteristic (less interlocking on drum)
Inner strands are reversed lay to provide good non-rotating properties of the rope.
Main Applications:
Main- and auxiliary hoist line for european type mobile- and for all
types of construction tower- and offshore cranes which require a
high strength rotation resistant rope construction. The rotation
resistant properties make this rope the preferred choice for all
single- and multiple line reeving applications.
Rope Characteristic:
This rope is constructed from 16 outer die-drawn strands over 12
inner die-drawn strands. The compacted Lang Lay strands reduce
interlocking while spooling onto multiple layer drums as well as
inter strand- and inter layer nicking.
This rope is suited to be used on tower cranes as well as european
made mobile crane models. Python ® Compac 35 comes with a
limited diameter tolerance of between +2% to +4% to comply with
LEBUS drum criteria. The large number of outer strands distribute
the pressures introduced by sheaves and drum more evenly onto
the core minimizing the danger of unexpected rope failures
because of undetected core deterioration.
Aside from this safety issue Python ® Compac 35 satisfies the highstrength
requirements of late model tower- and mobile cranes
which can NOT be met with neither 19x7 nor 19x19 style ropes.
Recommended to be used on grooved drums.
Python ® Compac 35 is available in right- AND left hand lay to
comply with OEM specifications (Krupp, Demag, Liebherr etc.)
Python ® Compac 35 ropes are classified as
NON-ROTATING
YES, Python® Compac 35
ropes can be used with a
swivel at the end. In fact, we
suggest you use a swivel
during installation and the
'break-in' period to get the
rope settled. After the break
in period you can lock the
swivel to stabilize the rope.
✔
O.K.
to use
-28-
When properly used
Python® Compac 35 is
stable against block
twisting. Fleet angles, small
sheaves, small line spacing,
low block weight will
negatively impact this
characteristic.

Non-Rotating Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD
LIMIT (WLL), or LINE PULL of the rope usually is 1/5
of the below stated values. For specific information
consult the standards applicable to your rope
application.
Non-Rotating Steel Wire Rope,
Python® Compac 35
Euro Style - Lang’s Lay
Class & Construction:
35 x 7 die-drawn strands (up to 42 mm / 1-5/8”)
35 x 19 die-drawn strands (over 44 mm / 1-3/4” and up)
Recommended to be used on tower-, european
type mobile-, and offshore cranes. Available in
left- and right hand lang’s lay construction.
Recommended if you require a rope for single
line hoisting applications.
Due to reduced diameter tolerance to between
+2% to +4% it conforms to the tight LEBUS drum
specification.
ALLOWED to be used with a swivel.
Rope
dia.
mm
14
15
16
17
18
19
20
21
22
23
24
25
26
28
30
Python ® Compac 35 Euro Style
Rope
dia.
inch
9/16
5/8
3/4
7/8
1
1-1/8
Minimum Breaking Strength
tons of
kN 2000 lbs
196
226
253
287
317
358
402
444
482
527
565
615
656
771
892
22.0
25.4
28.5
32.2
35.6
40.2
45.1
49.9
54.1
59.2
63.5
69.1
73.7
86.6
100.2
Weight
per meter
kg
.96
1.12
1.25
1.41
1.56
1.76
1.98
2.19
2.37
2.62
2.81
3.06
3.26
3.84
4.44
32
34
35
1-1/4
1-3/8
1006
1086
1148
113.0
122.0
129.0
5.00
5.61
5.92
36
37
38
1-1/2
1221
1276
1371
137.2
143.4
154.1
6.31
6.59
7.08
40
41
42
1-5/8
1470
1483
1553
165.3
166.7
174.5
7.59
8.05
8.43
44
46
48
1-3/4
1-7/8
1839
1969
2156
206.7
221.3
242.3
9.50
10.20
11.10
50
52
54
2
2-1/4
2356
2554
2771
264.8
287.1
311.5
12.20
13.20
14.30
56
58
60
2-3/8
2923
3150
3390
328.5
354.1
381.0
15.10
16.30
17.50
62
64
66
68
70
2-1/2
2-3/4
3632
3850
4078
4349
4630
295.8
432.7
458.3
488.8
520.4
18.80
19.90
21.10
22.50
23.90
72
74
76
78
80
3
3-1/8
4870
5155
5410
5719
5994
547.4
579.4
608.1
642.8
673.7
25.20
26.60
27.90
29.50
31.00
-29-

Non-Rotating Wire Rope
Python ® Lift
High Strength Non-Rotating
3-layer type, refer
to page 10
Python® Lift
15 OVAL shaped outer strands
Compacted rope design for highest breaking strength
Outer strands have 5 wires to enhance abrasion resistance plus each strand has
an inserted aluminum buffer core
Inner strands are reversed lay to provide excellent non-rotating properties
Main Applications:
Main- and auxiliary hoist line for high performance mobile-lattice
boom- and for all types of construction tower cranes which require
a super high strength rotation resistant rope construction. This is
THE true NON-ROTATING rope construction.
Rope Characteristic:
This 3-layer rope is constructed from 15 unique oval shaped outer
strands over 24 alternating diameter sized inner strands. The outer
strands of Python ® -LIFT have 5 wires instead of the usual 7. Each
wire is slightly larger for better abrasion resistance. In the inside of
each of these strands we put a aluminum wire during
manufacturing; this aluminum wire has NO function once the rope
is in service.
Python® Lift is our strongest non-rotating rope construction, both in
terms of strength with fixed AND with the ends allowed to rotate
freely. The gain in strength compared with the same sized 19x7 is
an astonishing 60%.
Python® Lift ropes are used where high fatigue resistance coupled
with high strength and excellent non-rotating properties is required;
e.g. in tunnel boring projects, subway construction, etc.
However, we do not recommended this rope to be used on smooth
drums. It works best on LEBUS drums with appropriately sized
groove contours.
Python® Lift ropes are classified as NON-ROTATING
YES, Python® Lift ropes can
be used with a swivel at the
end. In fact, we suggest you
use a swivel during
installation and the 'breakin'
period to get the rope
settled. After the break in
period you can lock the
swivel to stabilize the rope.
-30-
✔
O.K.
to use
When properly used
Python® Lift is stable
against block twisting. Fleet
angles, small sheaves,
small line spacing, low
block weight will negatively
impact this characteristic.

Non-Rotating Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
High Strength Non-Rotating
Crane Wire Rope
Class: 34 x 7
High strength super flexible true non-rotating
rope. Oval outer strands provide for excellent
sheave and drum contact area. Because of it’s
flexibility it is sensitive to multiple layer drum
crushing and mechanical damages and thus
requires grooved drums; works best on Lebus
drum lagging. It is NOT a good idea to use LIFT
on smooth (un-grooved) drums.
LIFT is ALLOWED to be used with swivel.
Rope
dia.
inch
7/16
1/2
9/16
5/8
3/4
7/8
Imperial Python ® - Lift
Minimum Breaking Strength
tons of 2000 lbs
Lift
EIPS
13.1
17.4
22.1
27.7
39.0
52.3
Lift
EEIPS
14.4
19.2
24.4
30.5
43.0
57.7
lbs
per
ft
.38
.51
.64
.81
1.14
1.53
1
1-1/8
1-1/4
69.8
88.4
109.3
76.9
97.5
120.5
2.03
2.58
3.19
Rope
dia.
mm
Metric Python ® - LIFT
Minimum Breaking Strength
kN
Lift
Lift
1960 N/mm 2 2160 N/mm 2
kg
per
meter
10
11
12
96.2
116.4
138.6
106.1
128.3
152.7
.47
.57
.68
13
14
15
162.6
188.6
216.5
179.1
207.7
238.5
.79
.92
1.06
16
18
19
246.4
311.8
347.4
271.3
343.4
382.6
1.20
1.52
1.69
20
22
24
384.9
465.8
554.3
423.9
513.0
610.5
1.88
2.27
2.70
26
28
30
650.6
754.5
866.1
716.5
830.9
953.9
3.17
3.68
4.22
32
985.5
1085.3
4.80
-31-

Non-Rotating Wire Rope
Python ® Hoist
Non-Rotating Wire Rope
3-layer type, refer
to page 10
Python® Hoist
Compacted rope design with 17 outer- and 21 inner strands
Outer strands have 7 compacted wires to enhance abrasion resistance
The CORE IS PLASTIC COATED to prevent metal-to-metal contact of rope core
to outer strands PLUS it locks in factory applied lubrication
Inner strands are reversed lay to provide non-rotating properties
Main Applications:
Load line on construction tower cranes. Main- and auxiliary hoist
line for tower- and overhead cranes as well as ship cranes which
require a non-rotating rope for severe dynamic load conditions.
Hoist is a medium strength non-rotating wire rope.
Rope Characteristic:
Constructed from 17 outer strands over a 2-layer 24 strand plastic
coated core. The plastic coating prevents metal to metal contact
between outer- and inner strands and thus nearly 100% reducing
the chance of undetectable inner wire- or strand failures. Plus, the
plastic shield locks in factory applied core lubrication. That is pretty
fancy, I say !
This rope is recommended for applications with high dynamic
fatigue loads where otherwise the core might fail. The plastic core
shield acts like a shock absorber much like in other Python® rope
types.
Python® Hoist requires grooved drums, preferable with LEBUS
grooving.
Python® Hoist ropes are classified as NON-ROTATING
YES, Python® Hoist ropes
can be used with a swivel at
the end. In fact, we suggest
you use a swivel during
installation and the 'breakin'
period to get the rope
settled. After the break in
period you can lock the
swivel to stabilize the rope.
✔
O.K.
to use
When properly used
Python® Hoist is stable
against block twisting. Fleet
angles, small sheaves,
small line spacing, low
block weight will negatively
impact this characteristic.
-32-

Non-Rotating Wire Rope
Breaking Strengths
Note: The maximum CAPACITY, WORKING LOAD LIMIT
(WLL), or LINE PULL of the rope usually is 1/5 of the below
stated values. For specific information consult the standards
applicable to your rope application.
Non-Rotating Crane Wire Rope
with a plastic coated core
Construction: 38 x 7
Class 34 x 7
Medium strength, high fatigue resistant nonrotating
type. Compacting increases strength and
sheave contact area. The plastic coated core
increases fatigue life and prevents premature
inner wire breaks as well as providing for
permanent core lubrication. ALLOWED to be
used with a swivel.
Increased contact points between rope and
sheave results in less internal rope pressure and
less rope and sheave wear.
Python®
Hoist
19x7
19x19
Rope
dia.
inch
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
Imperial Python ® - Hoist
Minimum Breaking Strength
tons of 2000 lbs
Hoist
EIPS
11.9
15.9
20.2
25.3
35.7
47.8
63.7
80.8
101.2
120.3
142.6
Hoist
EEIPS
13.2
17.6
21.3
27.8
39.3
52.7
70.2
89.0
111.5
132.6
157.1
lbs
per
ft
.37
.49
.63
.78
1.10
1.48
1.97
2.50
3.13
3.73
4.42
Metric Python ® - Hoist
Rope
dia.
mm
Minimum Breaking Strength
kN
Hoist
Hoist
2160 N/mm 2
kg
per
meter
10
11
12
1960 N/mm 2 96.8
87.9
106.3
126.5
117.1
139.4
.45
.55
.65
13
14
15
148.4
172.2
197.6
163.5
189.7
217.8
.77
.89
1.02
16
18
19
224.8
284.6
317.1
247.8
313.6
349.4
1.16
1.47
1.64
20
22
24
351.3
425.2
506.0
387.2
468.5
557.6
1.82
2.20
2.62
26
28
30
593.7
688.6
790.6
654.4
758.9
871.1
3.07
3.56
4.09
-33-

All ropes manufactured by
WDI - Seile, in Germany
www.wdi.de
represented by
Unirope Limited
A member of the WDI Group of Companies
Phone: 1 800 457 9997
info@pythonrope.com
www.pythonrope.com
Python Wire Rope is manufactured
under the ISO 9000 Quality System
Available from:
Unirope Limited
3070 Universal Drive
Mississauga, Ontario L4X 2C8
Phone: 1 800 457 9997
info@unirope.com
www.unirope.com
Hercules Sling and Cable
3800, route Transcanadienne
Point-Claire, Quebec, H9R 1B1
Phone: 1-800-361-2247
info@herculessling.com
www.herculessling.com
Bridgeport Wire Rope & Chain Ltd.
70 Akerley Blvd.
Dartmouth, Nova Scotia, B3B 1R1
Phone: 1 902-468-0300
pbrewster@bridgeportwire.com
www.bridgeportwire.com
Wesco Industries Ltd.
9663 - 199A Street, Unit 1
Langley, British Columbia, V1M 2X7
Phone: 604 881 3000
info@wescovan.com
www.wescovan.com
WIRE ROPE
CATALOGUE
11 / 2003
PYTHON ®
HIGH PERFORMANCE WIRE ROPE
04
Selection | Removal Criteria | Constructions | Specifications
MAKE SURE YOU CHECK
OUT OUR PYTHON ® WIRE
ROPE WEBSITE
www.pythonrope.com
© Unirope Limited 2004